eat 44% of the cow. reproduction is very rapid, very very rapid. one month and you have an adult insect, starting with an egg. with a cow you have nine months gestation and a couple of years before you can harvest the cow. >> reporter: dunkel says insects will save money, land, water, energy, and more. >> it also makes sense to use insects as high-quality feed instead of going into the oceans and harvesting fish, or using very difficult-to-produce alfalfa. >> reporter: and there's another advantage, especially with recent outbreaks of mad cow disease, contends brian fisher. >> we do have concerns about disease jumping from animals, like pigs and cows, to humans. but there are no worries about a disease jumping from an insect to humans. the more evolutionarily distant we are from our food source, the less danger there is. insects share very little d.n.a.